Starter Trouble

[jmmj]

i have an "87" yamaha yfm 200 dxt and the problem i am having is the pull starter will start the engine but the electric starter will crank it but won't start it. any help will be appreciated. thanks

[Snafoow]

Is the starter turning the engine over too slow for the engine to start?

Is there a low voltage problem at the starter while it is cranking over? Less than 10 volts at the starter while cranking the engine over I think would be a problem.

Does the starter, engine, frame, and electrical system have all the proper grounds? Are they good clean ground connections?

Is the starter or battery N F G and need to be replaced?

[rpyfz450]

What happens when you use jumper cables to boost the battery? Will it start then?

[jmmj]

<div class='quotetop'>QUOTE (rpyfz450 @ Dec 28 2006, 11:06 AM) <{POST_SNAPBACK}></div>

What happens when you use jumper cables to boost the battery? Will it start then?[/b]

no it does the same thing

<div class='quotetop'>QUOTE (Snafoow @ Dec 28 2006, 01:21 AM) <{POST_SNAPBACK}></div>

Is the starter turning the engine over too slow for the engine to start?

Is there a low voltage problem at the starter while it is cranking over? Less than 10 volts at the starter while cranking the engine over I think would be a problem.

Does the starter, engine, frame, and electrical system have all the proper grounds? Are they good clean ground connections?

Is the starter or battery N F G and need to be replaced?[/b]

could it be the brushes in the starter?